/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigInfluenceMap.h
[FRigInfluenceEntry](API\Plugins\ControlRig\Rigs\FRigInfluenceEntry) & FindOrAdd ( const [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) & InKey )